Amusement apparatus backbox



FIG. 1 is a front perspective view of an amusement appapratus backbox embodying the ornamental design of this invention;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof with the left side being a mirror image thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines disclosed in FIGS. 1, 2 and 4 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for an amusement apparatus backbox, as shown and described. 